'Storage modulus' presentation slideshows

Why Nanoreinforced Polymers?: Mechanics Issues

Why Nanoreinforced Polymers?: Mechanics Issues. Cate Brinson Frank Fisher Roger Bradshaw T. Ramanathan. Qian, Dickey, et al 2000. Outline. Motivation Why nano reinforced polymers? What are nanotubes anyway? Modeling Top-down: micromechanics Geometry effects Experiments

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Viscoelastic Properties of Crosslinked Chitosan Edible Films

Viscoelastic Properties of Crosslinked Chitosan Edible Films. Joseph Khouri Supervisors: Profs. C. Moresoli and A. Penlidis Dept. of Chemical Engineering. PRODUCTION. Chitin Sources. Main: Crustaceans (exoskeletal shells ), Secondary: Fungi (stem walls), Squid pen, cuttlefish.

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Food Rheology

Food Rheology. An overview http://sst.tees.ac.uk/external/U0000504/Notes/mscnotes/. The Scope of Rheology . The study of the deformation and flow of matter Concerned with the effect of shear stresses on materials having properties of fluids

1.35k views • 21 slides

DYNAMIC MODULI

DYNAMIC MODULI . Storage and Loss. Perfectly Elastic Materials. Mechanical properties described by elastic moduli. Viscoelastic Materials. have both an elastic and viscous component measurement of viscosity difficult by traditional methods.

605 views • 21 slides

From Rubinstein & Colby Polymer Physics

Here is a nice example of scaling: 3 different types of polymers, all normalized sround the entanglement molecular weight and viscosity at that molecular weight. From Rubinstein & Colby Polymer Physics. The best experiments do not match the reptation prediction exactly.

438 views • 10 slides

Rheological and Optoelectrical Properties of Mwcnts-Xg-Pva Nanocomposites

Polymer nanocomposites from multiwalled carbon nano tubes (MWCNTs) and xanthan gum (XG)-poly vinyl alcohol (PVA) polymer blend were prepared at different MWCNTs weight fractions. Rheological results indicated that addition of XG to PVA polymer will enhance rheological properties and thermal stability of MWCNTs-PVA nanocomposite. Addition of MWCNTs up to 1.5 w% will significantly improve storage modulus of the neat polymer blend while the increase of MWCNTs up to 3 w% will slightly decrease storage modulus. Optical results, on the other hand, revealed that MWCNTs are homogenously distributed and well dispersed in the neat polymer. Increasing of nano fillers in neat polymer will decrease optical energy gap from 5.30 eV (for pure XG-PVA) to 3.30 eV. Electrical results implied that adding XG to MWCNTs-PVA nanocomposite system will not highly affect electrical properties of nanocomposites.

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